No audio in any KVM guest after updating to Leap 15.6

Since updating, I have no sound in any guest VMs. I tried switching back to pulseaudio from pipewire, but I think I’m missing something. Anyone have advice on how to regain guest VM audio? Thanks.

Do the guest VMs detect a virtual audio device?
inxi -Aaz

If so, and when playing audio in a guest, what is reported on the host OS?
pactl list sink-inputs

Yes, guest VMs see the virtual audio device.

Audio:     Device-1: Intel 82801FB/FBM/FR/FW/FRW High Definition Audio vendor: Red Hat QEMU Virtual Machine 
           driver: snd_hda_intel v: kernel bus ID: 00:04.0 chip ID: 8086:2668 
           Sound Server: ALSA v: k5.4.0-216-generic 

The pactl command on the host returns nothing, with audio playing in the guest.

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